10.1016\/j.carbon.2023.118781<\/a><\/p>\nAuthors:<\/h4>\n
Beatrice Ricciardi, Williane da Silva Freitas, Barbara Mecheri, Khair Un Nisa, Jorge Montero, Valerio C.A. Ficca, E. Placidi, Cinthia Alegre, Alessandra D\u2019Epifanio<\/p>\n
Abstract:<\/h4>\n
Developing sustainable and efficient bifunctional catalysts for oxygen reduction (ORR) and evolution (OER) reactions is challenging for energy conversion and storage. This work proposes a hierarchical carbon matrix decorated with nitrogen atoms (NC) as a support for obtaining high-performance electrocatalysts based on iron and nickel (Fe\/Ni@N\u2013C). The effect of different Fe:Ni ratios and the pyrolysis conditions on the catalyst performance were investigated by combining electrochemical tests, N2-adsorption-desorption, X-ray diffraction, Transmission Electron Microscopy, and X-ray photoelectron spectroscopy. Once optimized the pyrolysis conditions and the Fe:Ni ratio, the Fe\/Ni@N\u2013C catalyst showed high bifunctional OER\/ORR activity in a three-electrode cell in an alkaline environment (KOH 1 M), with an overall \u0394E for the ORR-OER reaction of 0.75 V. Fe\/Ni@N\u2013C was assembled in a rechargeable zinc-air battery, resulting in an excellent electrochemical performance in terms of power density (148.5 mWcm\u22122) and durability, outperforming the benchmark Pt\/C\u2013RuO2.<\/p>\n","protected":false},"excerpt":{"rendered":"
DOI: 10.1016\/j.carbon.2023.118781 Authors: Beatrice Ricciardi, Williane da Silva Freitas, Barbara Mecheri, Khair Un Nisa, Jorge Montero, Valerio C.A. Ficca, E. Placidi, Cinthia Alegre, Alessandra D\u2019Epifanio Abstract: Developing sustainable and efficient bifunctional catalysts for oxygen reduction (ORR) and evolution (OER) reactions is challenging for energy conversion and storage. This work proposes a hierarchical carbon matrix decorated […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[34],"class_list":["post-411","post","type-post","status-publish","format-standard","hentry","category-blurev-rde-rrde","tag-battery"],"_links":{"self":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts\/411","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=411"}],"version-history":[{"count":0,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts\/411\/revisions"}],"wp:attachment":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=411"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=411"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}